Brake mechanism for talking-machines.



W. J. PATTERSON. BRAKE MEGHANISM FOR TALKING MACHINES. Arruouxon TILED D5014, 1910.

1,037,976, Patented Sept. 10,1912. I

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1,037,976. 7 Patented Sept. 10,1912

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UNITED STATES PATENT OFFICE.

WILLIAM J. PATTERSON,

OF DENVER, COLORADO.

BRAKE MECHANISM FOR TALKING-MACHINES.

Specification of Letters Patent.

Patented Sept.- 10, 1912.

Application filed December 14, 1910. Serial No. 597,246.

To all whom it may concern:

Be it known that I, WILLIAM J. PATTER- SON, a citizen of the United States, residing of devices hereinafter described and claimed.

In the accompanying drawings-Figure 1 is a plan of a portion of a talking machine of the type which employs a record disk, and showing my improved brake mechanism in connection therewith. Fig. 2 is a side elevation of the same. Fig. 3 is a vertical sectional view of my improved brake mechanism on the plane indicated by the line wa of Fig. 1. Fig. 4 is a horizontal sectional View of the same on the plane indicated by the line Z b of Fig. 2. Fig. 5 is an elevation of the sound box provided with the tappet arm, the arm which carries the sound box being indicated in section.

The base of my improved brake mechanism is here shown as a metal plate 1 provided with a relatively long arm 2, and a relatively short arm 3 at one end of the long arm, and disposed at an angle thereto. The base plate may be secured on the base A of themachine by screws 4 or other suitable devices. The long arm 2 of the base plate is provided at its outer end with a vertical standard 4:, at the upper end of which is a horizontal arm 5, which overhangs the arm 2. An arbor 6 has its bearings in the arms 2, 5, is vertically disposed and is provided near itslowerend with an arm 7, its upper end which projects above the arm 5 being provided with an operating arm 8 of suitable length and which is provided at its outer end with a downturned point 9 which in practice is set directly over the inner por tion of the record corresponding with the end of the record. On the arm 8 of the base plate is an angularlymovable plate 10 which is pivotally connected to the arm 3 as at 11. The base plate is so secured on the support or base'of the 'machine that the inner end of the arm 3 is opposite one side of the periphery of the circularcarrier B on'which the record disk C is placed.

A plunger 12 operates in a cylinder 13,

the outer end of which is mounted as at 1 L on the angularly movable plate 10, the said plunger being provided with an inwardly extending stem 15, which is guided in an openingin the head at the inner end of the said cylinder, and a coil spring 16 at the inner end of the said cylinder, and on the said stem bears between the inner head of the cylinder and the inner end of the plunger and serves to normally force the latter outwardly. ,The said plunger is provided with a'socket in its outer end, which projects from the outer end of the cylinder, and in the said socket is fitted a brake shoe or stop 17 which is preferably of. rubber, and which is disposed opposite the periphery of the carrier or turn table 13, and is adapted to engage the same and prevent the turntable from rotating with the record disk.

An arbor 18 which is vertically disposed, has its lower end mounted in andv bearing in the plate 10, and its upper end mounted in a bearing in an arm ofa post or standard 19 which extends upwardly from the said plate 10. On the upper end of the said arbor which projects above the upper bearing, is a milled head or button 20 whereby the said arbor .may be turned. The said arbor 18 is provided near its lower land with oppositely extending arms 21, 22. The arm 22 is connected by a rod 23' to the arm 7 of the arbor 6, the said rod being pivotally connected to the said arm as shown. The plunger 12 has anarm 24 which extends downwardly therefrom, and operates in a longitudinal slot in the lower side of the cylinder 13, and the said arm is connected by a rod 25 to the arm 21 of the arbor18, the said rod being pivot-ally engaged with the arm 24, and being also pivotally engaged with a pivot stud 26 with which the arm 21 is provided. Hence it will be understood that by partially turning the arbor 1.8, the plunger which carries the brake shoe may be moved inwardly out of engagement set cam portion 28;

with the record disk carrier of the machine, and that the spring which acts against the said plunger tends to move the latter toward the carrier so as to stop the rotation thereof.

Owing to the fact that arbor 18 to which the brake or stop device is attached is carried by the angularly movable plate 10, and the further fact that the arm 22 of said arbor is connected by the rod 23 to the arm 7 of the arbor- 6 which carries the operating arm 8, the latter may be turned angularly to adjust the same with its point 9 directly over the inner end of the record wherever that may be, on the record disk by appropriately moving the pivotally mounted plate 10 as will be understood. Hence the operating arm 8 may be disposed initially with its point over the inner end of any record, on any record disk by a mere adjustment of the plate 10 on the base 1 and relative to the machine frame A.

A lock spring 27 is attached to the inner side of the post 19 of the pivotally mounted plate 10, and is disposed wit-h its free end in the path of the arm 21, which is moved angularly by the arbor 18, the said spring being provided at its free end with an off- Hence when the arm 21 is moved angularly in either direction by the partial turning of the arbor 18, it displaces the free end of the spring and is moved to one side or the other of the offset or cam portion 28 thereof, and hence the spring serves to normally detainthe said arm at the limit of its angular stroke reached when the plunger 12 is in its retracted or set position. In order to limit the angular movement of the arm 21, and hence also of the arm 22, I provide an adjusting screw 29 whichoperates in an opening in a stud 30 which projects upwardly from the plate 10, one end of the said ad- .justing screw serving as a stop for the arm 22.

In the operation of my improved brake mechanism, the same is initially set with the point of its operating arm 8 disposed directly over the inner end of the record, and hence the said operating arm will lie in the path of the arm D of the talking ma-' lus travels on the record disk toward the operating arm 8. The sound box is provided with a tappet arm 31which is preferably shod at its lower end with a piece of tubular rubber 32. When the stylus of the sound box reaches the inner end ofthe record on the record disk, the tappet arm 31 between the arbor 6 and the arbor in cause the latter to make a partial rotation and to cause the arm 21 to move outwardly pastthe offset cam portion 28 of the locking spring 27 and thereby release the spring which operates the plunger. Thereupon the said spring forces the plunger, outwardly and applies the brake shoe or stop to the edge of the carrier B thereby arresting the rotation of the carrier and terminating the operation of the talking machine.

Of the mechanism entering into my improved brake device, the parts 24:, 25, 26, 21 and 22 may be functionally considered as brake restraining mechanism, the part 27 as a terminal detent therefor, the part 23 as a connecting member and the part 8 as a trigger member, the whole cooperating as indicated, the trigger, through the connecting member, to release the turning mechanism from the detent and thus leave the brake free to respond to the action of its spring.

1. A talking machine brake mechanism embodying a pivotally mounted support, a movable brake element and a spring to project the same, carried by the support, an arbor mounted in the support and having an operating arm and a locking arm, a con nection between one of the arms of the arbor and the movable brake element to actuate the latter when the arbor is turned, means co-acting with the locking armto yieldingly secure the arbor in brake restraining position, a pivotally mounted operating arm, a crank arm movable with and connected to the said operating arm, and a connection between the operating arm of the arbor and the said crank arm.

In combination with a talking machine brake including a movable brake element, and a spring to project. the same, a pivoted support, for the brake, an'arbor carried by said pivoted support, having means whereby it may be turned and also having a releasing element connected to the said movable brake element, a second arbor connected to the first named arbor to turn therewith, and an operating arm carried by the second arbor.

3.111 combination with a talking machine bral-ie including a movable brake element, and a spring to project the same. a pivoted support for the bral e, an arbor carried by said pivoted supwrt, having means whereby it may be turned and also In testimony whereof I hereunto afiix my having a releasinelement connected to the signature in the presence of two witnesses,

said movable bra e element asecond arbor g connected to the first namezl arbor toturn L A PATTERSON therewith. and-an operating arm carried by I ,VVitnesse's:

the second arbor, and means to lock said re- THOS. PL LONG,

leasing element in restraining position; JACOB SOHURGK.

Copies of this patent may be obtained for five cents each, liy'addressing the Commissioner of Patents,

' Washington, I). G. 

